The 1960s ushered in a new era in US demographic history characterized by significantly lower fertility rates and smaller family sizes. What catalyzed these changes remains a matter of considerable debate. This paper exploits idiosyncratic variation in the language of "Comstock" statutes, enacted in the late 1800s, to quantify the role of the birth control pill in this transition. Almost 50 yea...

An economic era has ended: Most companies can no longer sustain competitive advantages in product quality, functionality, or cost (Cooper, 1995; Fine, 1998; Schonberger, 1996; Wheelwright and Clark, 1992). The familiar struggle among domestic companies for market dominance has become a global struggle among lean competitors for economic parity. Core competencies that once delivered enduring adv...

In this era of Antibiotics decline in infectious diseases is seen but degenerative diseases have established themselves all over world, among which Atherosclerosis and Ischemic Heart Diseases are considered as greatest killer. In view of the increasing morbidity and mortality by these diseases and in absence of safety and adequate efficacy of modern drugs, it has become a timely necessity to un...

Th e U.S. Advisory Commission on Intergovernmental Relations (ACIR) befi tted an era marked by low party polarization, bipartisanship, and cooperative federalism. Although the ACIR’s work was valuable, the growth of federal power, rise of party polarization, and the decline of bipartisanship, along with many other political, governmental, and social changes during its 37-year life (1959–96), ma...

BACKGROUND The longitudinal rate and profile of cognitive decline in persons with stable, treated, and virally suppressed HIV infection is not established. To address this question, the current study quantifies the rate of cognitive decline in a cohort of virally suppressed HIV+ persons using clinically relevant definitions of decline, and determine cognitive trajectories taking into account hi...

Received 1 March 2004; accepted 2 March 2004; electronically published 1 July 2004. Reprints or correspondence: John G. Bartlett, 1830 Monument St. #437, Baltimore, MD 21205 ([email protected]). Clinical Infectious Diseases 2004; 39:170–2 2004 by the Infectious Diseases Society of America. All rights reserved. 1058-4838/2004/3902-0004$15.00 There appears to be a substantial decline in the quality of ...

CONTEXT Although drug-eluting stents reduce restenosis rates relative to bare-metal stents, concerns have been raised that drug-eluting stents may also be associated with an increased risk of stent thrombosis. Our study focused on the effect of stent type on population-based interventional outcomes. OBJECTIVE To compare outcomes of Medicare beneficiaries who underwent nonemergent coronary ste...